The Moon Is More Than a Night-Light
(Tell Me Why)

The moon does so much more than shine at night. Have you ever wondered how the moon was formed or why it changes shape in the sky? The moon's story began 4.5 billion years ago, but it continues to affect everything we do today, from weather to timekeeping. Award-winning science author Robert E. Wells explains how and why the moon matters in our lives--and for the future of space exploration.